Insulating device



FIG. 1 is a top, front, right perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The uneven-length broken lines represent unclaimed boundaries of the claimed design. The even-length broken lines showing the remainder of the insulating device represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 